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Operation
Example 90% Efficiency
Condensing Furnace
Condensing
furnaces/
boilers can be tested
through a hole drilled in
the
plastic
vent
pipe
(when allowed by the
manufacturer
or
local
authority of jurisdiction)
or taken from the exhaust
termination.
IMPORTANT:
combustion device being tested, and be aware of accepted
practices of the local jurisdiction before introducing sampling holes
into exhaust pipes or ducts.
CAUTION: To avoid the introduction of dangerous exhaust gases
into the space, be sure to completely and securely seal any sampling
holes made in the exhaust pipes or ducts.
42
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Fyrite
Example 80% Efficiency
Fan Assist or Power
Vented Furnace
Combustion testing of fan
Boilers, which have a 'bell'
assist or power vented,
shaped draft diverter on
furnaces/boilers should be
top, should be tested
done
through
a
hole
directly below the diverter
drilled
in
the
vent
through a hole drilled in
immediately above the
the vent connector.
inducer fan.
Review manufacturer recommendations for the
.com
InTech
Manual
Example
Atmospheric/Gravity
Vented Boiler
0024-9486 Rev 4
information@itm.com
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